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PubMed · 2632977

[Relation between optic disk changes and visual fields and the outflow coefficient values in primary glaucoma].

Z Skrzymowska
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Abstract

On the basis of archival records of 1463 patients the author isolated the cases of primary open angle glaucoma (2248 eyes) and closed angle glaucoma (333 eyes). The influence of the outflow factor on the grade of damage of nervous fibres manifesting itself by changes in the optic disc and abnormalities of the visual field was analyzed. It showed that this influence was statistically significant especially in cases of closed angle glaucoma.

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Aqueous HumorGlaucoma, Angle-ClosureGlaucoma, Open-AngleHumansIntraocular PressureOptic DiskVisual FieldsComparative StudyEnglish AbstractJournal Article

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Z Skrzymowska. 1989. [Relation between optic disk changes and visual fields and the outflow coefficient values in primary glaucoma].. https://pubmed.ncbi.nlm.nih.gov/2632977/

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The barrier function in neodymium-YAG laser capsulotomy.

BACKGROUND: Complications following neodymium (Nd)-YAG laser capsulotomy have been attributed to damage to the capsule and vitreous face. OBJECTIVES: To measure the disruption of the anterior-posterior extracapsular barrier complex induced by Nd-YAG laser capsulotomy and to determine how it might be minimized, using a fluorophotometer. DESIGN: Prospective study of 21 eyes undergoing Nd-YAG laser capsulotomy and cross-sectional comparison with 15 pseudophakic eyes with clear capsules. SETTING: University-based clinical practice. INTERVENTION: Neodymium-YAG laser posterior capsulotomy per study protocol. MAIN OUTCOME MEASURE: Change in extracapsular barrier efficiency as measured by fluorophotometry. RESULTS: Multivariate regression demonstrated that both anterior vitreous disruption and absence of a posterior chamber intraocular lens (aphakia) were significantly correlated with loss of barrier efficiency, whereas capsulotomy size was not. The anterior vitreous was judged to be undamaged in 67% of eyes treated by the study protocol. However, all myopic eyes sustained damage. Opacification of the posterior capsule itself was also associated with mild loss of barrier function even before capsulotomy, compared with the clear-capsule group. Glaucoma occurred more frequently when barrier efficiency was lost postoperatively. CONCLUSION: Damage to the extracapsular barrier complex by Nd-YAG laser capsulotomy is minimized when the anterior vitreous is preserved. The study treatment protocol may be useful in limiting this damage and in reducing complications.

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